Are there some ESRI folks out there who would like to step in for this?
The main reason I am doing this is to be able to control MapTip that comes from a "FeatureLayer" derived from a sublayer of some composite ArcGISDynamicLayers. Since the MapTip depends on the visibility of the derived FeatureLayer, a firing of MyLayer_ArcGISDynamicMapServiceLayer_PropertyChanged should allow one to set the visibility of the Featurelayer based on the visibility of the corresponding sublayer and therefore control the visibility of the MapTip. Is there a workaround or a pointer? Thanks